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Microbiology

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Gram Negative Cocci

Question
11 out of 22
 

The two pathogenic Neisseria species, N. meningitidis and N. gonorrhoeae, differ from the nonpathogenic Neisseria species in that:



A The former are less resistant to certain antibiotics than the nonpathogenic species.

B The pathogenic species are oxidase positive.

C The pathogenic species grow well in enriched chocolate agar.

D The pathogenic species do not grow well at room temperature.

Ans. C The pathogenic species grow well in enriched chocolate agar.

a. Neisseria gonorrhoeae and N. meningitidis are true human pathogens, surviving best in the human host.

b. They are more fastidious in their nutritional requirement, requiring an enriched selective medium and temperature for growth.

c. All Neisseria are oxidase positive. Normal flora (nonpathogenic) Neisseria will grow at room temperature on simple medium.

d. Because of beta-lactamase production, sensitivities should be done to ensure proper antimicrobial selection for treatment.

Gram Negative Cocci Flashcard List

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